If a 142g sample of an unknown compound contains only the elements phosphorus and oxygen and is found to contain 62 g of P and 80 g of o what is its empirical formula

Quantum mechanics applies to subatomic, atomic, nanometer-size, and micrometer-size systems. nanometer, micrometer, and kilometer-size systems. atomic, nanometer-size, and micrometer-size systems. subatomic, atomic, and nanometer-size systems.

Match each scenario to the form of energy it represents

If there's a small amount of friction between two surfaces, the result could be select all that applya. no movement b. heatc. a little bit of movementd. sliding around